The real problem is when you are surrounded by negative people that bring you down. If you have such friends, you aren't forced to hang out with them. It's your life. You choose. But if it's people you are forced to stay with (living with your parents for example), just cope with it, and use YouTube to listen to positive and successful people. You attract what you are. So if you want to be around successful people, whatever that means, be one. But don't be too picky. Most people are good, deep down. Only get rid of the toxic ones.
I think the question is successful at what? If you can answer that that hanging around successful people in the area of your interests is much easier that you think, you just need to have a destination.